adding 404 handling for courses that do not exist

lms/djangoapps/courseware/views.py

@@ -534,7 +534,15 @@ def course_about(request, course_id):
 @ensure_csrf_cookie
 @cache_if_anonymous
 def mktg_course_about(request, course_id):
+
+    coming_soon = False
+    try:
         course = get_course_with_access(request.user, course_id, 'see_exists')
+    except: Http404 as e:
+        # if a course does not exist yet, display a coming
+        # soon button
+        coming_soon = True
+
     registered = registered_for_course(course, request.user)
 
     if has_access(request.user, course, 'load'):
@@ -549,7 +557,8 @@ def mktg_course_about(request, course_id):
                               {'course': course,
                                'registered': registered,
                                'course_target': course_target,
-                               'show_courseware_link': show_courseware_link})
+                               'show_courseware_link': show_courseware_link
+                               'coming_soon': coming_soon})
 
 
 

lms/templates/courseware/mktg_course_about.html

@@ -63,6 +63,9 @@
 
   <ul class="list-actions register">
     <li class="item">
+    %if coming_soon:
+      <a class="action action-register is-registered" href="#">Coming Soon</a>
+    %else:
         %if user.is_authenticated():
           %if registered:
             <!-- signed in, registered -->
@@ -75,6 +78,7 @@
         <!-- not signed in -->
             <a class="action action-register is-not-signedin" href="${reverse('register_user')}">Register for <strong>${course.number}</strong></a>
         %endif
+    %endif
     </li>
   </ul>